PRINCIPLES OF AERO-HYDROELASTICITY

The field of studies is defined and typical phenomena are discussed. Aerohydroelastic problems are categorized: static vs. dynamic, number of spatial coordinates, forced motion vs. free motion, linearity, eigenfunctions, eigenvalues and stability. Analytical modeling and systematic development of equations of motions is followed by the discussion of Hamilton's principle, Lagrange equations, degrees of freedom and generalized coordinates. Modal description of elastic systems is contrasted with lumped-parameter description. Approximate methods of solving aero-hydroelastic problems are presented. The methods of determination and usefulness of free-vibration characteristics are explained. A survey is given of aerodynamic and hydrodynamic loads, and the distinction and consequences of linearity and nonlinearity in these loads are pointed out. A review of unsteady fluid mechanics is presented.

• Supplemental Notes:
  • Originally published by Ed Eyrolles, Paris, France.
• Corporate Authors:

  Centre de Recherches et d'Essais de Chatou

  6 quai Watier
  Chatou, Seine-et-Oise,   France 
• Authors:
  • Ashley, H
• Publication Date: 1973

Media Info

• Features: Photos;
• Pagination: p. 5-30

Subject/Index Terms

• TRT Terms: Dynamic loads; Hydrodynamic pressure; Hydroelasticity; Vibration
• Old TRIS Terms: Hydrodynamic forces
• Subject Areas: Design; Marine Transportation; Materials;

Filing Info

• Accession Number: 00057769
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Collect 17
• Files: TRIS
• Created Date: Oct 22 1974 12:00AM